Manti Te'o is seen here during an interview with ESPN, in Bradenton, Fla., on Jan. 18, 2013, courtesy of ESPN. (Ryan Jones/ESPN Images/Handout/Reuters)

MOBILE, ALA. - A four-year teammate of Manti Te'o on the University of Notre Dame football team said Monday he was unaware if other teammates were suspicious the star linebacker's dead-girlfriend story was a fabrication.

"I don't know. All I knew is that he had a girlfriend, and that was the extent of it," centre Braxston Cave told QMI Agency, in an interview after his North Team's first practice before Saturday's Senior Bowl college all-star game.

"I try to stay out of people's personal business."

From last September until this month, Te'o had given many interviews in which he claimed his close girlfriend, Lennay Kekua, died of leukemia on the same day his grandmother did back in September.

Te'o, college football's top linebacker, rode the wave of sympathy all season long. He finished second in voting for the Heisman Trophy.